/*    Copyright 2010 Tobias Marschall
 *
 *    This file is part of MoSDi.
 *
 *    MoSDi is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    MoSDi is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with MoSDi.  If not, see <http://www.gnu.org/licenses/>.
 */

package mosdi.tests;

import junit.framework.TestCase;
import mosdi.fa.Alphabet;
import mosdi.util.iterators.IupacInstanceIterator;

public class IupacInstanceIteratorTest extends TestCase {
	
	public void testIterator() {
		Alphabet iupacAlphabet = Alphabet.getIupacAlphabet();
		IupacInstanceIterator iterator = new IupacInstanceIterator(iupacAlphabet.buildIndexArray("ANRNT"));
		assertEquals("AAAAT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(0, iterator.getLeftmostChangedPosition());
		assertEquals("AAACT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(3, iterator.getLeftmostChangedPosition());
		assertEquals("AAAGT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(3, iterator.getLeftmostChangedPosition());
		assertEquals("AAATT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(3, iterator.getLeftmostChangedPosition());
		assertEquals("AAGAT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(2, iterator.getLeftmostChangedPosition());
		iterator.skip(2);
		assertEquals("ACAAT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(1, iterator.getLeftmostChangedPosition());
		assertEquals("ACACT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(3, iterator.getLeftmostChangedPosition());
		iterator.skip(1);
		assertEquals("AGAAT", iupacAlphabet.buildString(iterator.next()));
		assertEquals(1, iterator.getLeftmostChangedPosition());
		iterator.skip(0);
		assertFalse(iterator.hasNext());
	}

}
